TL;DR: The iPhone 5 and older, the fourth-generation iPad and older, and any iPod touch other than the sixth-generation model will not be able to update to iOS 11. The availability of ARCKit, which Apple just rolled out within the last few months, and now iOS 11, should open the door for more retailer AR activity.
If you have iCloud Backup already turned on in your settings (you can check this in the iCloud menu after tapping your Apple ID), your phone should already be backed up to the cloud. For those users that don't want to mess with iCloud, there's also a process on a macOS device.
Apple recently updated the Developer Guidelines to include that apps can not be on Apple's App Store if they are misleading. It can also send an automatic reply to certain contacts to let them know that you're driving, if you get a text while you're behind the wheel.
From there click Back Up Now. You can choose to restore a backup, which may or may not bring any problems back over, or you can start from scratch and re-install the apps you want and need. "Can I pay you back later" excuse.
One other improvement we will definitely use is the ability to send more than one music playlist to Apple Watch.
The final version of iOS 11 is all set for release tomorrow.
Coming this fall, Apple Maps will add indoor maps for shopping centers and airports around the world, including: Amsterdam, London, Las Vegas, Los Angeles, Miami, Philadelphia and San Jose.
You can find that by clicking: Settings General About Applications.
What it also means is that it shouldn't be long before other retailers start leveraging Apple's ARCKit to create their own AR apps.
If you have an iOS device, you might want to learn about the shady malware that is now being removed from the App Store.
While we wait for tomorrow in sheer excitement, make sure to check this compelling guide about how to prepare for tomorrow's iOS 11 update. The 3-year cutoff is still in full effect, so only those devices that are significantly elderly will be bumped.
Before applying the upgrade, it is important to ensure your smartphone is compatible with iOS 11.
For iTunes, connect your device to your computer. Once the device appears in iTunes, select the device, click Summary - Check for Update - Download - Update.
When your iPhone restarts it will prompt you to go through setup and you will be able to restore from a backup or start as a new iPhone.